Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“Ich wollte eine PDF Datei ausfüllen und signieren, was nicht funktioniert”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2524617489

Proof data

Record hash (SHA-256)

8292df793826b0552e6cd3f8d96e53f686fc0ece669d94275810a626a2118a10

Signature (Ed25519, base64)

opp3yB9pmoGoNwL4+dLDxvKs1CpZ+8eeN0I/Dsabwu+k6OoH11synIOJ9sBIzaortJTe1L6v0A555vv0aTBtCA==

Merkle root

5c4849a28e8624d6f6d3204e1f81a6b24f2188b6690e8b122801054617ca25d8

Merkle path

["828f2b76f243f58026a7eb56f9237454f011980c357e890e333f9844a558000e","47e896557cdf042855d9102f76cccffa48e482274fc7a896bb7cf91b51083401","0f86a64a79ec7ca453396277244aaa8d09aab361b6e3fb377c11879e10714764","cdee423c6b216f5de41ef981034e040f4004368a56e6c2652ecaa82dfd18b67b","a0965a12d15deaa0fa396f4bb6ef25e2247e0b8c69a34c6792fc81d7fd03e426","412837ceda4fd298886efb266ad396b4c99dc032a20dd6627d559ad6f2b961e6","5ca45e2105ba0b913e6cedf16b901c967b1a815e9acbdfb594bf6e72dbbe75b7","23b732893647dea6b96774ce3a21165be66a4762bd51568d05408a1a1fa8736e","2026147b173c0608b53f4da987b163b91af208ebca5d94367f74954fe0855636","8747b48dcd9476203f6ed361696c05b578071477f56003d6fcaf39f5022bfd6a","1a5a66c4823eb11cbe97f93794673ba6edf769be5556d91673946b727a561775","e09225a951a50088525e8a7a6996704783b2f3575afa2d0547574736c21c8bdf","12f96ca4240540bfe75bf803cb42df83a15718abf65320073fe2c2d7c1da740e","855df8175222f9db398f9629c729494a6b2f86ecb26c7fc54bbd061fab2ad520","649f189ed3a422a3ffceae7f7673f3e683a1fac940fd27a4d89bce585dd48e49"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2524617489 · entry 108e9186e8c5677ab139…

Expected log hash

2051fcd76f2ba790414bb1c15fd4d3d064889742ea46f8e55b5028f1f571c27b The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.

Canonical record

{"dataset_version":"v1787193158162","kind":"published-quote","locale":"de","page":"product:acrobat/sign-pdf/de","quote":"Ich wollte eine PDF Datei ausfüllen und signieren, was nicht funktioniert","rating":1,"review_date":"2026-06-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (5c4849a28e86…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.